Anchoring bar for curtain stretchers



April .21, 1925.

E. F. DAILEY ANCHORING BAR FOR CURTAIN STRETCHERS Filed Jan. 5, 1923 IN VENTOR fiere if Fflae'ley A TTOR/VE Y mounted on trunnions 15, mounted in suitable bearings in oppoiste ends of the casing 1. Only one of the stretcher frames has been described as the other is an exact duphcate and the application of my lnvention to each is the same.

In applying a curtain to the stretcher frame, one side of the curtain is placed over the brushes 7 and one end over the brushes 9 of the respective channel bars 6 and 8, and the remaining side of the curtain is placed on the brushes 12 of the channel bar 11, which is then moved out-ward over the rods 10 to stretch the curtain, and locked in an adjusted position by screwing down screws 14 into engagement with said rods. The opposite end of the curtain is then anchored by the device which I will now describe.

Referring to Figures 2, 3 and 4, the numeral 16 indicates a channel bar which is provided with brushes 17, the latter, as a whole, comprising a base of cloth, or the like, 18 having wire staples inserted through its bottom and projecting from its top. The channel in the bar 16 is provided by bending over. its opposite edge portions, as 1ndicated at 19, and the cloth 18 is inserted into the channel from one end of the bar with its opposite edges engaging under the channel members 19, as shown in Figure 4; the channel members 19 are then bent into bind'ng engagement with the cloth. At one end of the bar 16, I provide two longitudinal parallel projections, or pins, 20, one at either side of the bar, for insertion in openings in the vertical flange 21 of one of the side bars 1 of the frame. At the opposite end of the bar, I provide a pin 22 which is cons'derably longer than the pins 20. The pin 22 is provided on the end of a plate 23 which is applied to the bottom of the channel bar 16 at the end, as shown by Figure 3, and secured thereon by a clip 24, which is riveted, or otherwise secured to the bar at its inner end, as indicated at 25, and is bent to extend over the plate 23 and to have a rivet 26 pass through it and said plate and to be secured in the back of the channel bar. Encircling the pin 22 and suitably secured at its inner end in position thereon, is a coil spring 27, the outer end of which is free. The vertical flange of one of the bars 4, as stated, is provided wFth a series of apertures for receiving the pins 20, these apertures being represented by dotted lines in Figure 2 and indicated by the numeral 28, and the vertical flange 29 of the other side bar 4: is provided with a series of apertures for receving the pin 22, which apertures are also represented by dotted lines in Figure 2 and indicated by the numeral 30.

In operation, the curtain having been anchored at its ends and two sides as described, the free or terminal end of the curtain is engaged over the brushes 17 and the bar pulled outward to stretch the curtain, and then inserted in the appropriate apertures 28 and 30. To do this, the pin 22 is first inserted in the aperture 30 and the bar pressed toward the flange 29 against resistance of spring 27. This permits the pins 20 to be brought opposite the appropriate openings 28, when, by releasing pressure on the bar, the spring 27 will force the pins 20 into said openings, and, being interposed between the opposite angle bar 4 and the end of the channel bar 16, will constantly exert pressure on the bar to keep the pins 20 from being accidentally withdrawn from the openings. The pin 22 is sufiiciently long, as will be understood, to remain in engagement with the opening 30 after the pins 20 have been forced into their openings by the spring 27. The provision of the two pins 20 is, of course, for the purpose of preventing the bar 16 from turning, after once being positioned in the frame. Another way of manipulating the bar would be to place it in position in the frame in the manner last described adjacent to the terminal end of the curtain, and then stretch the curtain by hand and place it in engagement with the brushes 17.

It will be obvious that changes could be made in the construction shown and de scribed herein without departing from the spiritof my invention. For example, it is clear that the spring could be placed at the opposite end of the bar from that shown, and that the two pins at this end of the bar could be made longer than the single pin at the opposite end. Also, it will be equally obvious that both ends of the bar could have two pins. As these are not modifications of the invention, but mere alternative constructions, I have not considered it necessary to illustrate the same, as a mere reference is suflicient to indicate that they are included within the scope of my invention, as out lined in the claims.

I claim:

1. In combination with a curtain-stretcher frame having parallel side bars provided with a series of openings, means for anchoring the terminal end of a curtain, comprising a banhaving a pair of pins at one end for engag ng in theopenings of one bar, and a pin its opposte end for engaging in the openings of the other bar, resilient means at one end of the bar against the resistance of which the said pair of pins are inserted into their openings after the said single pin has been inserted in its opening, and means on the bar for engaging the terminal end of the curtain to hold it in a stretched condition.

2. A device for use in curtain-stretchers, comprising a bar having a plurality of pins pro ecting from one end, and a single pin projecting from the other end, a coil spring secured to one end of the bar, and means on one side of said bar for engaging the end said bar for engaging the end of a curtain of a curtain, and a coil spring secured at one to be stretched. end to said bar and encircling said single 10 3. A device for use in curtain-stretchers, P 5 comprising a bar having a pair of pins In testimony whereof, I have hereunto jecting from one end, and a single pin pro- Set my handjecting from the other, a brush secured on EVERETT F. DAILEY. 

